Construct a 95% or 99% confidence interval based on a classmate's data. Discuss how the margin of error and width of the interval change. Pick a specialization in healthcare (General Surgery, Labor Delivery, Pediatrics, Social Work, etc.). Research a topic within that specialization that would involve constructing a confidence interval.

The proportion research on prices of homes led me to find homes in Texas are pretty expensive. According to The U.S Federal Housing Finance Agency, the average price is $526,690. 15 random home prices found on Zillow.com are the following: 1. 1. $750,000 2. $720,000 3. $585,000 4. $550,000 5. $549,000 6. $435,000 7. $385,000 8. $380,000 9. $375,000 10. $267,000 11. $265,000 12. $230,000 13. $228,000 14. $225,000 15. $223,000 Our text tells us the point estimate is a single value that we use to find an estimate of the proportion of a population. The point estimate and margin of error are used to find the lower and upper limits by adding the point estimate and margin of error together to get the upper limits. In order to find the lower limits you will subtract the margin of error from the point estimate to get the lower limit. My confidence error for the proportion of homes that have a price above the price of the state is 31% to 36%. A confidence error is the potential for error when using a confidence interval to estimate a population parameter. Basically I am 90% confident that 31 to 36 percent of houses in Texas cost above the average price